He was born in Spain in about 1538 and studied law at the university of Salamanca. He was named bishop of Lima in 1580 and sailed to America. Full of apostolic zeal, he traversed his gigantic diocese three times, generally on foot, baptizing, teaching and confirming the natives. He assembled many synods and councils to make the Church strong, organised, and above all holy; and he strongly defended the rights of the natives, who were Spanish citizens according to the law but who were nevertheless being oppressed by the colonists and the provincial governors. He died in Lima on 23 March 1606. See the articles in WIkipedia and the Catholic Encyclopaedia.

Leo was born in Etruria and became Pope in 440. He was a true shepherd and father of souls. He constantly strove to keep the faith whole and strenuously defended the unity of the Church. He repelled the invasions of the barbarians or alleviated their effects, famously persuading Attila the Hun not to march on Rome in 452, and preventing the invading Vandals from massacring the population in 455.

Violet is a dark colour, ‘the gloomy cast of the mortified, denoting affliction and melancholy’. Liturgically, it is the colour of Advent and Lent, the seasons of penance and preparation.